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The Richter scale [1] (/ ˈ r ɪ k t ər /), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, [2] is a measure of the strength of earthquakes, developed by Charles Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it the "magnitude scale". [3]
Seismic magnitude scales are used to describe the overall strength or "size" of an earthquake. These are distinguished from seismic intensity scales that categorize the intensity or severity of ground shaking (quaking) caused by an earthquake at a given location. Magnitudes are usually determined from measurements of an earthquake's seismic ...
An earthquake – also called a quake, tremor, or temblor – is the shaking of the Earth 's surface resulting from a sudden release of energy in the lithosphere that creates seismic waves. Earthquakes can range in intensity, from those so weak they cannot be felt, to those violent enough to propel objects and people into the air, damage ...
The Cascadia subduction zone is a 960 km (600 mi) fault at a convergent plate boundary, about 100–200 km (70–100 mi) off the Pacific coast, that stretches from northern Vancouver Island in Canada to Northern California in the United States. It is capable of producing 9.0+ magnitude earthquakes and tsunamis that could reach 30 m (98 ft).
A 5.1 magnitude earthquake shook central Oklahoma late Friday night and was felt over a 200-mile radius from Kansas to Texas and Arkansas, a scientist with the U.S. Geological Survey said.
Earthquakes which did not affect the United States directly, but caused tsunamis which did: 1960 Valdivia earthquake and tsunami – magnitude 9.5 earthquake, between 2200 and 6000 fatalities, including 61 in Hilo, HI. 2006 Kuril Islands earthquake and tsunami – magnitude 8.3 earthquake, no injuries or fatalities anywhere.
24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. ... But 13 earthquakes of magnitude 4.5 or stronger have been recorded since 1950 within 500 km (311 miles) of ...
August 12, 2024 at 5:52 PM. DAMASCUS, Syria (AP) — An earthquake shook central Syria late Monday, local authorities said, causing no major damages but rattling the nerves of residents who ...